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3 years ago

What is the value of the discriminant for the quadratic equation 2x2− x + 8 = 0?

Mathematics

1 answer:

Alja [10]3 years ago

7 0

2x² <span>- x + 8 = 0
D</span>iscriminant = b² - 4ac
a=2, b=-1, c=8

D = (-1)² - 4 * 2 * 8 = 1 - 64 = -63

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3 years ago

Please select the best answer from the choices provided

Lana71 [14]

<h3><u>Answer:</u></h3>

Hence, the value of z is:

<h3><u>Step-by-step explanation:</u></h3>

The point C is the mid point of the line segment VW.

That is it divides the line segment VW into two equal segments.

i.e. Length of segment VC= Length of line segment CW.

Also we are given that:

Length VW=61

Length VC=z+13

and Length CW=z+8

This means that:

VC+CW=VW

i.e. z+13+z+8=61

⇒ 2z+21=61

⇒ 2z=61-21

⇒ 2z=40

⇒ z=20

Hence the value of z is:

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3 years ago

Read 2 more answers